MISSING LINK - On Moonbase Alpha, Helena struggles to save a badly injured Koenig, but in his reality the commander is on the planet Zenno being studied by Raan, an alien anthropologist. To return home, Koenig must convince Raan that Earthmen are not savage primitives - and he must also reject the love of Raan's beautiful daughter, Vanna. No stranger to science fiction and horror, Peter Cushing ("Raan") portrayed Dr. Frankenstein, Dr. Van Helsing, Dr. Who, Grand Moff Tarkin of Star Wars, and master detective Sherlock Holmes (a character he greatly admired).
THE A-B CHRONICLES - When shockwaves from mysterious explosions threaten to destroy Moonbase Alpha, Commander Koenig travels to their source and encounters a race in the chrysalis stage of their evolutionary cycle. Only three aliens on the entire planet are conscious, and they alone will decide whether Alpha will be saved. Sarah Douglas ("B") portrayed Kryptonian super-criminal "Ursa" in Superman II (1981, Warner Bros.) Val Guest directed The Creeping Unknown, Enemy From Space, The Abominable Snowman of the Himalayas, The Day the Earth Caught Fire, and two other episodes of Space 1999.